#1F748B#1F748B

#1F748B is a mid, moderate cyan. Relative luminance 0.146; OKLCH L 52.0% C 0.085 H 220.4°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F748B
RGB	rgb(31, 116, 139)
HSL	hsl(193, 64%, 33%)
HSV	hsv(193, 78%, 55%)
CMYK	cmyk(77.7%, 16.5%, 0%, 45.5%)
CIE-LAB	lab(45.14, -16.48, -19.67)
CIE-LCH	lch(45.14, 25.66, 230.06°)
OKLab	oklab(52.04% -0.0647 -0.055)
OKLCH	oklch(52.04% 0.085 220.4)
XYZ	xyz(11.4687, 14.6448, 26.6434)
Luminance	0.1465 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F748B #8B361F

analogous

#1F8B6C #1F748B #1F3E8B

triadic

#1F748B #8B1F74 #748B1F

tetradic

#1F748B #6C1F8B #8B361F #3E8B1F

square

#1F748B #6C1F8B #8B361F #3E8B1F

split-complementary

#1F748B #8B1F3E #8B6C1F

monochromatic

#092027 #144A59 #1F748B #2A9EBD #4DBAD7

Accessibility & contrast

On white

5.34

#1F748B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#1F748B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F748B

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F748B	#FFFFFF	#000000	##FFFFFF
##1F748B	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#66718C

Deuteranopia (green-blind)

#58668B

Tritanopia (blue-blind)

#007B7B

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #1f748b;
/* rgb */ color: rgb(31, 116, 139);
/* oklch */ color: oklch(52.0% 0.085 220.4);

Tailwind

colors: {
  custom: {
    50: '#6d9cad',
    500: '#1f748b',
    950: '#000000',
  },
}

SCSS

$custom: #1f748b;
$custom-light: #6d9cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f748b",
  "rgb": {
    "r": 31,
    "g": 116,
    "b": 139
  },
  "hsl": {
    "h": 192.778,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.52041,
    "c": 0.08495,
    "h": 220.4
  },
  "luminance": 0.14646
}

Semantic roles & 50–950 ramp

primary

#1F748B

secondary

#BA634C

accent

#6441E7

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #1F748B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →